PHP 로그인 암호 기억하기

 
<form action="login.php" method="post"> 
 <input type="text" name="username"><br> 
 <input type="text" name="password"><br> 
 <input type="checkbox" name="jizhu" value="1"><br> 
<input type="submit"> 
</form> 
<a href="userinfo.php"> </a> 
<?php 
session_start(); 
function p($arr){ 
echo "<pre>"; 
print_r($arr); 
echo "</pre>"; 
} 
p($_SESSION); 
p($_COOKIE); 
?> 

 
<?php 
function p($arr){ 
echo "<pre>"; 
print_r($arr); 
echo "</pre>"; 
} 
session_start(); 
//p($_POST); 
$_SESSION['username'] = $_POST['username']; 
$_SESSION['password'] = $_POST['password']; 
if($_POST['jizhu']){ 
setcookie('username',$_POST['username'],time()+60); 
setcookie('password',$_POST['password'],time()+60); 
} 
header("location:form.php"); 

 
<?php 
session_start(); 
echo " ， form.php  ，   "; 
p($_SESSION); 
p($_COOKIE); 
if(empty($_SESSION['username'])){ 
if(empty($_COOKIE['username'])){ 
echo "<a href='form.php'> </a>";exit; 
}else{ 
$_SESSION['username'] = $_COOKIE['username']; 
} 
} 
function p($arr){ 
echo "<pre>"; 
print_r($arr); 
echo "</pre>"; 
} 
?> 
2131231231 
<a href="updateuserinfo.php"> </a> 
<a href="logout.php"> </a> 

 
<?php 
session_start(); 
unset($_SESSION['username']); 
unset($_SESSION['password']); 
setcookie('username','',0); 
setcookie('password','',0); 
header("location:form.php"); 
?> 

 
<?php 
session_start(); 
if(empty($_SESSION['username'])){ 
echo " "; 
}else{ 
echo " "; 
} 
?>